HEADER TOXIN 17-JUL-01 1JLZ TITLE SOLUTION STRUCTURE OF A K+-CHANNEL BLOCKER FROM THE TITLE 2 SCORPION TOXIN OF TITYUS CAMBRIDGEI COMPND MOL_ID: 1; COMPND 2 MOLECULE: TITYUSTOXIN ALPHA-KTX; COMPND 3 CHAIN: A; COMPND 4 ENGINEERED: YES SOURCE MOL_ID: 1; SOURCE 2 SYNTHETIC: YES; SOURCE 3 OTHER_DETAILS: THIS SEQUENCE OCCURS NATURALLY IN SCORPION SOURCE 4 TOXIN. KEYWDS SCORPION VENOM, ALPHA-KTX, K+-CHANNEL BLOCKER, NMR KEYWDS 2 STRUCTURE, TOXIN EXPDTA SOLUTION NMR NUMMDL 15 AUTHOR I.WANG,S.-H.WU,H.-K.CHANG,R.-C.SHIEH,H.-M.YU,C.CHEN REVDAT 4 24-FEB-09 1JLZ 1 VERSN REVDAT 3 01-APR-03 1JLZ 1 JRNL REVDAT 2 18-DEC-02 1JLZ 1 REMARK REVDAT 1 06-FEB-02 1JLZ 0 JRNL AUTH I.WANG,S.H.WU,H.K.CHANG,R.C.SHIEH,H.M.YU,C.CHEN JRNL TITL SOLUTION STRUCTURE OF A K(+)-CHANNEL BLOCKER FROM JRNL TITL 2 THE SCORPION TITYUS CAMBRIDGEI. JRNL REF PROTEIN SCI. V. 11 390 2002 JRNL REFN ISSN 0961-8368 JRNL PMID 11790849 JRNL DOI 10.1110/PS.33402 REMARK 1 REMARK 2 REMARK 2 RESOLUTION. NOT APPLICABLE. REMARK 3 REMARK 3 REFINEMENT. REMARK 3 PROGRAM : X-PLOR 98 REMARK 3 AUTHORS : BRUNGER REMARK 3 REMARK 3 OTHER REFINEMENT REMARKS: THE STRUCTURES ARE BASED ON A TOTAL REMARK 3 OF 200 RESTRAINTS, 163 ARE NOE-DERIVED DISTANCE CONSTRAINTS, REMARK 3 21 DIHEDRAL ANGLE RESTRAINTS,16 DISTANCE RESTRAINTS FROM REMARK 3 HYDROGEN BONDS. REMARK 4 REMARK 4 1JLZ COMPLIES WITH FORMAT V. 3.15, 01-DEC-08 REMARK 100 REMARK 100 THIS ENTRY HAS BEEN PROCESSED BY PDBJ ON 23-JUL-01. REMARK 100 THE RCSB ID CODE IS RCSB013923. REMARK 210 REMARK 210 EXPERIMENTAL DETAILS REMARK 210 EXPERIMENT TYPE : NMR REMARK 210 TEMPERATURE (KELVIN) : 275 REMARK 210 PH : 3.0 REMARK 210 IONIC STRENGTH : NULL REMARK 210 PRESSURE : AMBIENT REMARK 210 SAMPLE CONTENTS : 2MM TC1; 50MM PHOSPHATE REMARK 210 BUFFER; 90% H2O, 10% D2O REMARK 210 REMARK 210 NMR EXPERIMENTS CONDUCTED : 2D NOESY, DQF-COSY, 2D TOCSY REMARK 210 SPECTROMETER FIELD STRENGTH : 500 MHZ, 600 MHZ REMARK 210 SPECTROMETER MODEL : AMX, AVANCE REMARK 210 SPECTROMETER MANUFACTURER : BRUKER REMARK 210 REMARK 210 STRUCTURE DETERMINATION. REMARK 210 SOFTWARE USED : XWINNMR 2.5, AURELIA 2.1 REMARK 210 METHOD USED : SIMULATED ANNEALING REMARK 210 REMARK 210 CONFORMERS, NUMBER CALCULATED : 100 REMARK 210 CONFORMERS, NUMBER SUBMITTED : 15 REMARK 210 CONFORMERS, SELECTION CRITERIA : STRUCTURES WITH THE LOWEST REMARK 210 ENERGY REMARK 210 REMARK 210 BEST REPRESENTATIVE CONFORMER IN THIS ENSEMBLE : 6 REMARK 210 REMARK 210 REMARK: THIS STRUCTURE WAS DETERMINED USING STANDARD 2D REMARK 210 HOMONUCLEAR TECHNIQUES. REMARK 215 REMARK 215 NMR STUDY REMARK 215 THE COORDINATES IN THIS ENTRY WERE GENERATED FROM SOLUTION REMARK 215 NMR DATA. PROTEIN DATA BANK CONVENTIONS REQUIRE THAT REMARK 215 CRYST1 AND SCALE RECORDS BE INCLUDED, BUT THE VALUES ON REMARK 215 THESE RECORDS ARE MEANINGLESS. REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: TORSION ANGLES REMARK 500 REMARK 500 TORSION ANGLES OUTSIDE THE EXPECTED RAMACHANDRAN REGIONS: REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 STANDARD TABLE: REMARK 500 FORMAT:(10X,I3,1X,A3,1X,A1,I4,A1,4X,F7.2,3X,F7.2) REMARK 500 REMARK 500 EXPECTED VALUES: GJ KLEYWEGT AND TA JONES (1996). PHI/PSI- REMARK 500 CHOLOGY: RAMACHANDRAN REVISITED. STRUCTURE 4, 1395 - 1400 REMARK 500 REMARK 500 M RES CSSEQI PSI PHI REMARK 500 1 CYS A 2 -63.53 -140.47 REMARK 500 1 CYS A 9 46.46 -97.16 REMARK 500 1 LYS A 10 89.95 -24.36 REMARK 500 2 CYS A 2 -72.03 -140.60 REMARK 500 2 CYS A 9 44.56 -96.77 REMARK 500 2 LYS A 10 90.70 -27.58 REMARK 500 3 CYS A 2 -62.63 -147.11 REMARK 500 3 CYS A 9 45.89 -97.29 REMARK 500 3 LYS A 10 90.18 -24.86 REMARK 500 4 CYS A 2 -63.15 -92.96 REMARK 500 4 CYS A 9 43.40 -97.22 REMARK 500 4 LYS A 10 88.97 -25.83 REMARK 500 4 SER A 12 108.36 178.77 REMARK 500 5 CYS A 2 -56.23 -129.02 REMARK 500 5 CYS A 9 44.97 -97.16 REMARK 500 5 LYS A 10 90.96 -26.38 REMARK 500 6 CYS A 2 -72.75 -94.66 REMARK 500 6 CYS A 9 46.66 -96.73 REMARK 500 6 LYS A 10 90.29 -25.58 REMARK 500 7 CYS A 9 44.78 -97.48 REMARK 500 7 LYS A 10 91.68 -26.02 REMARK 500 8 CYS A 2 -72.16 -110.32 REMARK 500 8 CYS A 9 47.03 -97.55 REMARK 500 8 LYS A 10 91.48 -26.70 REMARK 500 9 CYS A 9 43.58 -97.34 REMARK 500 9 LYS A 10 89.83 -26.67 REMARK 500 10 CYS A 9 43.37 -97.08 REMARK 500 10 LYS A 10 92.01 -26.86 REMARK 500 11 CYS A 2 -74.88 -136.40 REMARK 500 11 CYS A 9 44.32 -97.28 REMARK 500 11 LYS A 10 91.98 -26.34 REMARK 500 11 SER A 12 108.50 -173.01 REMARK 500 12 CYS A 9 43.65 -97.68 REMARK 500 12 LYS A 10 90.82 -26.96 REMARK 500 13 CYS A 2 -64.36 -139.12 REMARK 500 13 CYS A 9 43.05 -97.21 REMARK 500 13 LYS A 10 92.49 -28.06 REMARK 500 14 CYS A 9 43.51 -97.18 REMARK 500 14 LYS A 10 90.36 -27.35 REMARK 500 14 SER A 12 110.08 -165.00 REMARK 500 15 CYS A 9 46.02 -97.11 REMARK 500 15 LYS A 10 90.32 -27.05 REMARK 500 15 SER A 12 110.91 -162.88 REMARK 500 REMARK 500 REMARK: NULL REMARK 500 REMARK 500 GEOMETRY AND STEREOCHEMISTRY REMARK 500 SUBTOPIC: PLANAR GROUPS REMARK 500 REMARK 500 PLANAR GROUPS IN THE FOLLOWING RESIDUES HAVE A TOTAL REMARK 500 RMS DISTANCE OF ALL ATOMS FROM THE BEST-FIT PLANE REMARK 500 BY MORE THAN AN EXPECTED VALUE OF 6*RMSD, WITH AN REMARK 500 RMSD 0.02 ANGSTROMS, OR AT LEAST ONE ATOM HAS REMARK 500 AN RMSD GREATER THAN THIS VALUE REMARK 500 (M=MODEL NUMBER; RES=RESIDUE NAME; C=CHAIN IDENTIFIER; REMARK 500 SSEQ=SEQUENCE NUMBER; I=INSERTION CODE). REMARK 500 REMARK 500 M RES CSSEQI RMS TYPE REMARK 500 1 ARG A 6 0.31 SIDE_CHAIN REMARK 500 1 ARG A 19 0.32 SIDE_CHAIN REMARK 500 2 ARG A 6 0.31 SIDE_CHAIN REMARK 500 2 ARG A 19 0.31 SIDE_CHAIN REMARK 500 3 ARG A 6 0.28 SIDE_CHAIN REMARK 500 3 ARG A 19 0.22 SIDE_CHAIN REMARK 500 4 ARG A 6 0.29 SIDE_CHAIN REMARK 500 4 ARG A 19 0.30 SIDE_CHAIN REMARK 500 5 ARG A 6 0.21 SIDE_CHAIN REMARK 500 5 ARG A 19 0.31 SIDE_CHAIN REMARK 500 6 ARG A 6 0.31 SIDE_CHAIN REMARK 500 6 ARG A 19 0.22 SIDE_CHAIN REMARK 500 7 ARG A 6 0.30 SIDE_CHAIN REMARK 500 7 ARG A 19 0.27 SIDE_CHAIN REMARK 500 8 ARG A 6 0.24 SIDE_CHAIN REMARK 500 8 ARG A 19 0.28 SIDE_CHAIN REMARK 500 9 ARG A 6 0.31 SIDE_CHAIN REMARK 500 9 ARG A 19 0.32 SIDE_CHAIN REMARK 500 10 ARG A 6 0.22 SIDE_CHAIN REMARK 500 10 ARG A 19 0.27 SIDE_CHAIN REMARK 500 11 ARG A 6 0.30 SIDE_CHAIN REMARK 500 11 ARG A 19 0.28 SIDE_CHAIN REMARK 500 12 ARG A 6 0.31 SIDE_CHAIN REMARK 500 12 ARG A 19 0.32 SIDE_CHAIN REMARK 500 13 ARG A 6 0.32 SIDE_CHAIN REMARK 500 13 ARG A 19 0.25 SIDE_CHAIN REMARK 500 14 ARG A 6 0.32 SIDE_CHAIN REMARK 500 14 ARG A 19 0.25 SIDE_CHAIN REMARK 500 15 ARG A 6 0.30 SIDE_CHAIN REMARK 500 15 ARG A 19 0.21 SIDE_CHAIN REMARK 500 REMARK 500 REMARK: NULL DBREF 1JLZ A 1 23 UNP P83243 SCK1_TITCA 1 23 SEQRES 1 A 23 ALA CYS GLY SER CYS ARG LYS LYS CYS LYS GLY SER GLY SEQRES 2 A 23 LYS CYS ILE ASN GLY ARG CYS LYS CYS TYR HELIX 1 1 SER A 4 CYS A 9 1 6 SHEET 1 A 2 GLY A 13 ILE A 16 0 SHEET 2 A 2 ARG A 19 CYS A 22 -1 O ARG A 19 N ILE A 16 SSBOND 1 CYS A 2 CYS A 15 1555 1555 2.02 SSBOND 2 CYS A 5 CYS A 20 1555 1555 2.02 SSBOND 3 CYS A 9 CYS A 22 1555 1555 2.02 CRYST1 1.000 1.000 1.000 90.00 90.00 90.00 P 1 1 ORIGX1 1.000000 0.000000 0.000000 0.00000 ORIGX2 0.000000 1.000000 0.000000 0.00000 ORIGX3 0.000000 0.000000 1.000000 0.00000 SCALE1 1.000000 0.000000 0.000000 0.00000 SCALE2 0.000000 1.000000 0.000000 0.00000 SCALE3 0.000000 0.000000 1.000000 0.00000 ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL ENDMDL MASTER 156 0 0 1 2 0 0 6 0 0 0 2 END